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J. K. GIBBS.

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iJNITED STATES PATENT OFFICE.

JOHN K. GIBBS, OF LEWISTON, MAINE, ASSIGNOR TO HENRY B. SKINNER, OF SAME PLACE.

BOBBlN.

SPECIFICATION forming part of Letters Patent No. 242,444, dated June 7, 1881,

Application filed February 12, 1881.

To all whom it may concern Be it known that 1, JOHN K. GIBBS, a citizen of the United States, residing at Lewiston, in the county ofAndroscoggin and State of Maine,

have invented certain new and useful Improvements in Bobbins; and I do hereby declare the iollowin g to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make to and use the same, reference being had to the accompanying drawings, and to letters or tigures of reference marked thereon, which form a part of this specification.

This invention relates to a certain improvei5 ment in the manufacture of wooden bobbins for spinning and roving machinery.

Heretofore the head of a bobbin has been re-enforced by a wire arranged in a formed groove and the ends united by twisting. This method of re-enforcing bobbin-heads is objectionable for several reasons, among which may be stated: first, in the shrinkage of the bobbin the wire becomes loose, causing it to rattle, and, being loose, the bobbin is liable to split; second, the liability of the ends becoming unfastened causes trouble in the working of the bobbin.

The object of my improvement is to overcome these diftieulties, which permit the bobbin to split and thus render it worthless for further use.

My invention consists in the combination, with a wooden bobbin having in its head a formed groove, of a piece of strong twine or catgut wrapped one or more times around in" the groove and the ends secured by a staple driven into the wood, as will he hereinafter more fully set forth and claimed.

Figure 1 is an exterior side view of a wooden 4 bobbin broken away at the top and in section,

showing my improvements. Fig. 2 is an enlarged vertical sectional view of the bobbinhead, showing the layers of the twine in the groove. Fig. 3 is an enlarged exterior view of the bobbin-head, showing the layers of the twine in the groove and the fasteningstaple, indicated by dotted lines. Fig. 4 is a transverse sectional View taken through the line 2 z of Fig. 2. Fig. 5 is a perspective view of the staple for securing the ends of the twine.

In the annexed drawings, forming a part of this specification, the letter A represents an (No model.)

ordinary wooden bobbin with the usual-shaped head B. This head is formed with a continuous groove, a, of sufficient depth above the notches. Around this groove a is wrapped a piece of strong twine or catgut, one end being kept in place by overlapping once, twice, or thrirepreerahl y three times-and drawn tight by a force or power that will cause the material to stretch and sink firmly into the groove below the outer surface of the head, as seen in Fig. 2 of the drawings. The wrapped twine or catgut is now secured in position by means of a staple, I), (see Fig. 5,) driven diagonall y into the wood over the ends, as shown in Figs. 1, 2, and 3 of the drawings. This staple, when driven home, should not project beyond the outside surface of the head.

The twine employed should be prepared as to strength by waxing or tarring in the usual manner.

The advantages gained by the employment of strong twine, catgut, or their equivalents over the wire are that the twine or catgut can be drawn more tightly around the bobbin, causing said twine or catgut to stretch, so that when the wood of the bobbin shrinks or contracts the twine or catgut will still bind the bobbin and hold the same from splitting, and in case the bobbin swells or expands the material wrapping the same is sufficiently elastic to conform to the new condition.

WVhat I claim as my invention, and desire to secure by Letters Patent, is 8 1. The combination, with a wooden bobbin having in its head a formed groove, of apiece of strong twine or catgut wrapped one or more times around in the groove and the fasteningstaple driven into the wood over the ends, substantially as described, and for the purposes stated.

2. The improved bobbin hereinbefore described for cotton machinery, consisting of the wooden bobbin A, formed with head B and 5 groove a, the twine or catgut wrapped in the groove, and the fastening-staple.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN K. GIBBS.

Witnesses:

A. D. OoRNIsH, S. W. DALY. 

